import sys
import dis
import io
+ import re
+import types
+import contextlib
+
+def get_tb():
+ def _error():
+ try:
+ 1 / 0
+ except Exception as e:
+ tb = e.__traceback__
+ return tb
+
+ tb = _error()
+ while tb.tb_next:
+ tb = tb.tb_next
+ return tb
+
+TRACEBACK_CODE = get_tb().tb_frame.f_code
class _C:
def __init__(self, x):
pass
dis_bug1333982 = """\
-- %-4d 0 LOAD_CONST 1 (0)
- 3 JUMP_IF_TRUE 33 (to 39)
- 6 POP_TOP
- 7 LOAD_GLOBAL 0 (AssertionError)
- 10 BUILD_LIST 0
- 13 LOAD_FAST 0 (x)
- 16 GET_ITER
- >> 17 FOR_ITER 12 (to 32)
- 20 STORE_FAST 1 (s)
- 23 LOAD_FAST 1 (s)
- 26 LIST_APPEND 2
- 29 JUMP_ABSOLUTE 17
-
- %-4d >> 32 LOAD_CONST 2 (1)
- 35 BINARY_ADD
- 36 RAISE_VARARGS 2
- >> 39 POP_TOP
-
- %-4d 40 LOAD_CONST 0 (None)
- 43 RETURN_VALUE
++%3d 0 LOAD_CONST 1 (0)
+ 3 POP_JUMP_IF_TRUE 35
+ 6 LOAD_GLOBAL 0 (AssertionError)
+ 9 LOAD_CONST 2 (<code object <listcomp> at 0x..., file "%s", line %d>)
+ 12 LOAD_CONST 3 ('bug1333982.<locals>.<listcomp>')
+ 15 MAKE_FUNCTION 0
+ 18 LOAD_FAST 0 (x)
+ 21 GET_ITER
+ 22 CALL_FUNCTION 1 (1 positional, 0 keyword pair)
+
- %-4d 25 LOAD_CONST 4 (1)
++%3d 25 LOAD_CONST 4 (1)
+ 28 BINARY_ADD
+ 29 CALL_FUNCTION 1 (1 positional, 0 keyword pair)
+ 32 RAISE_VARARGS 1
+
- %-4d >> 35 LOAD_CONST 0 (None)
++%3d >> 35 LOAD_CONST 0 (None)
+ 38 RETURN_VALUE
""" % (bug1333982.__code__.co_firstlineno + 1,
+ __file__,
+ bug1333982.__code__.co_firstlineno + 1,
bug1333982.__code__.co_firstlineno + 2,
bug1333982.__code__.co_firstlineno + 3)
dis.dis(func)
else:
dis.disassemble(func, lasti)
- finally:
- sys.stdout = save_stdout
- # Trim trailing blanks (if any).
- return [line.rstrip() for line in s.getvalue().splitlines()]
+ return output.getvalue()
def get_disassemble_as_string(self, func, lasti=-1):
- return '\n'.join(self.get_disassembly(func, lasti, False))
+ return self.get_disassembly(func, lasti, False)
+
++ def strip_addresses(self, text):
++ return re.sub(r'\b0x[0-9A-Fa-f]+\b', '0x...', text)
+
def do_disassembly_test(self, func, expected):
- self.assertEqual(self.get_disassembly(func), expected)
- lines = self.get_disassembly(func)
- expected = expected.splitlines()
- if expected == lines:
- return
- else:
- lines = [re.sub('0x[0-9A-Fa-f]+', '0x...', l) for l in lines]
- if expected == lines:
- return
- self.fail(
- "events did not match expectation:\n" +
- "\n".join(difflib.ndiff(expected,
- lines)))
++ got = self.get_disassembly(func)
++ if got != expected:
++ got = self.strip_addresses(got)
++ self.assertEqual(got, expected)
def test_opmap(self):
self.assertEqual(dis.opmap["NOP"], 9)
self.assertEqual(dis.pretty_flags(0), '0x0')
- def test_main():
- run_unittest(DisTests, DisWithFileTests, CodeInfoTests,
- InstructionTests, BytecodeTests)
-
+# Fodder for instruction introspection tests
+# Editing any of these may require recalculating the expected output
+def outer(a=1, b=2):
+ def f(c=3, d=4):
+ def inner(e=5, f=6):
+ print(a, b, c, d, e, f)
+ print(a, b, c, d)
+ return inner
+ print(a, b, '', 1, [], {}, "Hello world!")
+ return f
+
+def jumpy():
+ # This won't actually run (but that's OK, we only disassemble it)
+ for i in range(10):
+ print(i)
+ if i < 4:
+ continue
+ if i > 6:
+ break
+ else:
+ print("I can haz else clause?")
+ while i:
+ print(i)
+ i -= 1
+ if i > 6:
+ continue
+ if i < 4:
+ break
+ else:
+ print("Who let lolcatz into this test suite?")
+ try:
+ 1 / 0
+ except ZeroDivisionError:
+ print("Here we go, here we go, here we go...")
+ else:
+ with i as dodgy:
+ print("Never reach this")
+ finally:
+ print("OK, now we're done")
+
+# End fodder for opinfo generation tests
+expected_outer_line = 1
+_line_offset = outer.__code__.co_firstlineno - 1
+code_object_f = outer.__code__.co_consts[3]
+expected_f_line = code_object_f.co_firstlineno - _line_offset
+code_object_inner = code_object_f.co_consts[3]
+expected_inner_line = code_object_inner.co_firstlineno - _line_offset
+expected_jumpy_line = 1
+
+# The following lines are useful to regenerate the expected results after
+# either the fodder is modified or the bytecode generation changes
+# After regeneration, update the references to code_object_f and
+# code_object_inner before rerunning the tests
+
+#_instructions = dis.get_instructions(outer, first_line=expected_outer_line)
+#print('expected_opinfo_outer = [\n ',
+ #',\n '.join(map(str, _instructions)), ',\n]', sep='')
+#_instructions = dis.get_instructions(outer(), first_line=expected_outer_line)
+#print('expected_opinfo_f = [\n ',
+ #',\n '.join(map(str, _instructions)), ',\n]', sep='')
+#_instructions = dis.get_instructions(outer()(), first_line=expected_outer_line)
+#print('expected_opinfo_inner = [\n ',
+ #',\n '.join(map(str, _instructions)), ',\n]', sep='')
+#_instructions = dis.get_instructions(jumpy, first_line=expected_jumpy_line)
+#print('expected_opinfo_jumpy = [\n ',
+ #',\n '.join(map(str, _instructions)), ',\n]', sep='')
+
+
+Instruction = dis.Instruction
+expected_opinfo_outer = [
+ Instruction(opname='LOAD_CONST', opcode=100, arg=1, argval=3, argrepr='3', offset=0, starts_line=2, is_jump_target=False),
+ Instruction(opname='LOAD_CONST', opcode=100, arg=2, argval=4, argrepr='4', offset=3, starts_line=None, is_jump_target=False),
+ Instruction(opname='LOAD_CLOSURE', opcode=135, arg=0, argval='a', argrepr='a', offset=6, starts_line=None, is_jump_target=False),
+ Instruction(opname='LOAD_CLOSURE', opcode=135, arg=1, argval='b', argrepr='b', offset=9, starts_line=None, is_jump_target=False),
+ Instruction(opname='BUILD_TUPLE', opcode=102, arg=2, argval=2, argrepr='', offset=12, starts_line=None, is_jump_target=False),
+ Instruction(opname='LOAD_CONST', opcode=100, arg=3, argval=code_object_f, argrepr=repr(code_object_f), offset=15, starts_line=None, is_jump_target=False),
+ Instruction(opname='LOAD_CONST', opcode=100, arg=4, argval='outer.<locals>.f', argrepr="'outer.<locals>.f'", offset=18, starts_line=None, is_jump_target=False),
+ Instruction(opname='MAKE_CLOSURE', opcode=134, arg=2, argval=2, argrepr='', offset=21, starts_line=None, is_jump_target=False),
+ Instruction(opname='STORE_FAST', opcode=125, arg=2, argval='f', argrepr='f', offset=24, starts_line=None, is_jump_target=False),
+ Instruction(opname='LOAD_GLOBAL', opcode=116, arg=0, argval='print', argrepr='print', offset=27, starts_line=7, is_jump_target=False),
+ Instruction(opname='LOAD_DEREF', opcode=136, arg=0, argval='a', argrepr='a', offset=30, starts_line=None, is_jump_target=False),
+ Instruction(opname='LOAD_DEREF', opcode=136, arg=1, argval='b', argrepr='b', offset=33, starts_line=None, is_jump_target=False),
+ Instruction(opname='LOAD_CONST', opcode=100, arg=5, argval='', argrepr="''", offset=36, starts_line=None, is_jump_target=False),
+ Instruction(opname='LOAD_CONST', opcode=100, arg=6, argval=1, argrepr='1', offset=39, starts_line=None, is_jump_target=False),
+ Instruction(opname='BUILD_LIST', opcode=103, arg=0, argval=0, argrepr='', offset=42, starts_line=None, is_jump_target=False),
+ Instruction(opname='BUILD_MAP', opcode=105, arg=0, argval=0, argrepr='', offset=45, starts_line=None, is_jump_target=False),
+ Instruction(opname='LOAD_CONST', opcode=100, arg=7, argval='Hello world!', argrepr="'Hello world!'", offset=48, starts_line=None, is_jump_target=False),
+ Instruction(opname='CALL_FUNCTION', opcode=131, arg=7, argval=7, argrepr='7 positional, 0 keyword pair', offset=51, starts_line=None, is_jump_target=False),
+ Instruction(opname='POP_TOP', opcode=1, arg=None, argval=None, argrepr='', offset=54, starts_line=None, is_jump_target=False),
+ Instruction(opname='LOAD_FAST', opcode=124, arg=2, argval='f', argrepr='f', offset=55, starts_line=8, is_jump_target=False),
+ Instruction(opname='RETURN_VALUE', opcode=83, arg=None, argval=None, argrepr='', offset=58, starts_line=None, is_jump_target=False),
+]
+
+expected_opinfo_f = [
+ Instruction(opname='LOAD_CONST', opcode=100, arg=1, argval=5, argrepr='5', offset=0, starts_line=3, is_jump_target=False),
+ Instruction(opname='LOAD_CONST', opcode=100, arg=2, argval=6, argrepr='6', offset=3, starts_line=None, is_jump_target=False),
+ Instruction(opname='LOAD_CLOSURE', opcode=135, arg=2, argval='a', argrepr='a', offset=6, starts_line=None, is_jump_target=False),
+ Instruction(opname='LOAD_CLOSURE', opcode=135, arg=3, argval='b', argrepr='b', offset=9, starts_line=None, is_jump_target=False),
+ Instruction(opname='LOAD_CLOSURE', opcode=135, arg=0, argval='c', argrepr='c', offset=12, starts_line=None, is_jump_target=False),
+ Instruction(opname='LOAD_CLOSURE', opcode=135, arg=1, argval='d', argrepr='d', offset=15, starts_line=None, is_jump_target=False),
+ Instruction(opname='BUILD_TUPLE', opcode=102, arg=4, argval=4, argrepr='', offset=18, starts_line=None, is_jump_target=False),
+ Instruction(opname='LOAD_CONST', opcode=100, arg=3, argval=code_object_inner, argrepr=repr(code_object_inner), offset=21, starts_line=None, is_jump_target=False),
+ Instruction(opname='LOAD_CONST', opcode=100, arg=4, argval='outer.<locals>.f.<locals>.inner', argrepr="'outer.<locals>.f.<locals>.inner'", offset=24, starts_line=None, is_jump_target=False),
+ Instruction(opname='MAKE_CLOSURE', opcode=134, arg=2, argval=2, argrepr='', offset=27, starts_line=None, is_jump_target=False),
+ Instruction(opname='STORE_FAST', opcode=125, arg=2, argval='inner', argrepr='inner', offset=30, starts_line=None, is_jump_target=False),
+ Instruction(opname='LOAD_GLOBAL', opcode=116, arg=0, argval='print', argrepr='print', offset=33, starts_line=5, is_jump_target=False),
+ Instruction(opname='LOAD_DEREF', opcode=136, arg=2, argval='a', argrepr='a', offset=36, starts_line=None, is_jump_target=False),
+ Instruction(opname='LOAD_DEREF', opcode=136, arg=3, argval='b', argrepr='b', offset=39, starts_line=None, is_jump_target=False),
+ Instruction(opname='LOAD_DEREF', opcode=136, arg=0, argval='c', argrepr='c', offset=42, starts_line=None, is_jump_target=False),
+ Instruction(opname='LOAD_DEREF', opcode=136, arg=1, argval='d', argrepr='d', offset=45, starts_line=None, is_jump_target=False),
+ Instruction(opname='CALL_FUNCTION', opcode=131, arg=4, argval=4, argrepr='4 positional, 0 keyword pair', offset=48, starts_line=None, is_jump_target=False),
+ Instruction(opname='POP_TOP', opcode=1, arg=None, argval=None, argrepr='', offset=51, starts_line=None, is_jump_target=False),
+ Instruction(opname='LOAD_FAST', opcode=124, arg=2, argval='inner', argrepr='inner', offset=52, starts_line=6, is_jump_target=False),
+ Instruction(opname='RETURN_VALUE', opcode=83, arg=None, argval=None, argrepr='', offset=55, starts_line=None, is_jump_target=False),
+]
+
+expected_opinfo_inner = [
+ Instruction(opname='LOAD_GLOBAL', opcode=116, arg=0, argval='print', argrepr='print', offset=0, starts_line=4, is_jump_target=False),
+ Instruction(opname='LOAD_DEREF', opcode=136, arg=0, argval='a', argrepr='a', offset=3, starts_line=None, is_jump_target=False),
+ Instruction(opname='LOAD_DEREF', opcode=136, arg=1, argval='b', argrepr='b', offset=6, starts_line=None, is_jump_target=False),
+ Instruction(opname='LOAD_DEREF', opcode=136, arg=2, argval='c', argrepr='c', offset=9, starts_line=None, is_jump_target=False),
+ Instruction(opname='LOAD_DEREF', opcode=136, arg=3, argval='d', argrepr='d', offset=12, starts_line=None, is_jump_target=False),
+ Instruction(opname='LOAD_FAST', opcode=124, arg=0, argval='e', argrepr='e', offset=15, starts_line=None, is_jump_target=False),
+ Instruction(opname='LOAD_FAST', opcode=124, arg=1, argval='f', argrepr='f', offset=18, starts_line=None, is_jump_target=False),
+ Instruction(opname='CALL_FUNCTION', opcode=131, arg=6, argval=6, argrepr='6 positional, 0 keyword pair', offset=21, starts_line=None, is_jump_target=False),
+ Instruction(opname='POP_TOP', opcode=1, arg=None, argval=None, argrepr='', offset=24, starts_line=None, is_jump_target=False),
+ Instruction(opname='LOAD_CONST', opcode=100, arg=0, argval=None, argrepr='None', offset=25, starts_line=None, is_jump_target=False),
+ Instruction(opname='RETURN_VALUE', opcode=83, arg=None, argval=None, argrepr='', offset=28, starts_line=None, is_jump_target=False),
+]
+
+expected_opinfo_jumpy = [
+ Instruction(opname='SETUP_LOOP', opcode=120, arg=74, argval=77, argrepr='to 77', offset=0, starts_line=3, is_jump_target=False),
+ Instruction(opname='LOAD_GLOBAL', opcode=116, arg=0, argval='range', argrepr='range', offset=3, starts_line=None, is_jump_target=False),
+ Instruction(opname='LOAD_CONST', opcode=100, arg=1, argval=10, argrepr='10', offset=6, starts_line=None, is_jump_target=False),
+ Instruction(opname='CALL_FUNCTION', opcode=131, arg=1, argval=1, argrepr='1 positional, 0 keyword pair', offset=9, starts_line=None, is_jump_target=False),
+ Instruction(opname='GET_ITER', opcode=68, arg=None, argval=None, argrepr='', offset=12, starts_line=None, is_jump_target=False),
+ Instruction(opname='FOR_ITER', opcode=93, arg=50, argval=66, argrepr='to 66', offset=13, starts_line=None, is_jump_target=True),
+ Instruction(opname='STORE_FAST', opcode=125, arg=0, argval='i', argrepr='i', offset=16, starts_line=None, is_jump_target=False),
+ Instruction(opname='LOAD_GLOBAL', opcode=116, arg=1, argval='print', argrepr='print', offset=19, starts_line=4, is_jump_target=False),
+ Instruction(opname='LOAD_FAST', opcode=124, arg=0, argval='i', argrepr='i', offset=22, starts_line=None, is_jump_target=False),
+ Instruction(opname='CALL_FUNCTION', opcode=131, arg=1, argval=1, argrepr='1 positional, 0 keyword pair', offset=25, starts_line=None, is_jump_target=False),
+ Instruction(opname='POP_TOP', opcode=1, arg=None, argval=None, argrepr='', offset=28, starts_line=None, is_jump_target=False),
+ Instruction(opname='LOAD_FAST', opcode=124, arg=0, argval='i', argrepr='i', offset=29, starts_line=5, is_jump_target=False),
+ Instruction(opname='LOAD_CONST', opcode=100, arg=2, argval=4, argrepr='4', offset=32, starts_line=None, is_jump_target=False),
+ Instruction(opname='COMPARE_OP', opcode=107, arg=0, argval='<', argrepr='<', offset=35, starts_line=None, is_jump_target=False),
+ Instruction(opname='POP_JUMP_IF_FALSE', opcode=114, arg=47, argval=47, argrepr='', offset=38, starts_line=None, is_jump_target=False),
+ Instruction(opname='JUMP_ABSOLUTE', opcode=113, arg=13, argval=13, argrepr='', offset=41, starts_line=6, is_jump_target=False),
+ Instruction(opname='JUMP_FORWARD', opcode=110, arg=0, argval=47, argrepr='to 47', offset=44, starts_line=None, is_jump_target=False),
+ Instruction(opname='LOAD_FAST', opcode=124, arg=0, argval='i', argrepr='i', offset=47, starts_line=7, is_jump_target=True),
+ Instruction(opname='LOAD_CONST', opcode=100, arg=3, argval=6, argrepr='6', offset=50, starts_line=None, is_jump_target=False),
+ Instruction(opname='COMPARE_OP', opcode=107, arg=4, argval='>', argrepr='>', offset=53, starts_line=None, is_jump_target=False),
+ Instruction(opname='POP_JUMP_IF_FALSE', opcode=114, arg=13, argval=13, argrepr='', offset=56, starts_line=None, is_jump_target=False),
+ Instruction(opname='BREAK_LOOP', opcode=80, arg=None, argval=None, argrepr='', offset=59, starts_line=8, is_jump_target=False),
+ Instruction(opname='JUMP_ABSOLUTE', opcode=113, arg=13, argval=13, argrepr='', offset=60, starts_line=None, is_jump_target=False),
+ Instruction(opname='JUMP_ABSOLUTE', opcode=113, arg=13, argval=13, argrepr='', offset=63, starts_line=None, is_jump_target=False),
+ Instruction(opname='POP_BLOCK', opcode=87, arg=None, argval=None, argrepr='', offset=66, starts_line=None, is_jump_target=True),
+ Instruction(opname='LOAD_GLOBAL', opcode=116, arg=1, argval='print', argrepr='print', offset=67, starts_line=10, is_jump_target=False),
+ Instruction(opname='LOAD_CONST', opcode=100, arg=4, argval='I can haz else clause?', argrepr="'I can haz else clause?'", offset=70, starts_line=None, is_jump_target=False),
+ Instruction(opname='CALL_FUNCTION', opcode=131, arg=1, argval=1, argrepr='1 positional, 0 keyword pair', offset=73, starts_line=None, is_jump_target=False),
+ Instruction(opname='POP_TOP', opcode=1, arg=None, argval=None, argrepr='', offset=76, starts_line=None, is_jump_target=False),
+ Instruction(opname='SETUP_LOOP', opcode=120, arg=74, argval=154, argrepr='to 154', offset=77, starts_line=11, is_jump_target=True),
+ Instruction(opname='LOAD_FAST', opcode=124, arg=0, argval='i', argrepr='i', offset=80, starts_line=None, is_jump_target=True),
+ Instruction(opname='POP_JUMP_IF_FALSE', opcode=114, arg=143, argval=143, argrepr='', offset=83, starts_line=None, is_jump_target=False),
+ Instruction(opname='LOAD_GLOBAL', opcode=116, arg=1, argval='print', argrepr='print', offset=86, starts_line=12, is_jump_target=False),
+ Instruction(opname='LOAD_FAST', opcode=124, arg=0, argval='i', argrepr='i', offset=89, starts_line=None, is_jump_target=False),
+ Instruction(opname='CALL_FUNCTION', opcode=131, arg=1, argval=1, argrepr='1 positional, 0 keyword pair', offset=92, starts_line=None, is_jump_target=False),
+ Instruction(opname='POP_TOP', opcode=1, arg=None, argval=None, argrepr='', offset=95, starts_line=None, is_jump_target=False),
+ Instruction(opname='LOAD_FAST', opcode=124, arg=0, argval='i', argrepr='i', offset=96, starts_line=13, is_jump_target=False),
+ Instruction(opname='LOAD_CONST', opcode=100, arg=5, argval=1, argrepr='1', offset=99, starts_line=None, is_jump_target=False),
+ Instruction(opname='INPLACE_SUBTRACT', opcode=56, arg=None, argval=None, argrepr='', offset=102, starts_line=None, is_jump_target=False),
+ Instruction(opname='STORE_FAST', opcode=125, arg=0, argval='i', argrepr='i', offset=103, starts_line=None, is_jump_target=False),
+ Instruction(opname='LOAD_FAST', opcode=124, arg=0, argval='i', argrepr='i', offset=106, starts_line=14, is_jump_target=False),
+ Instruction(opname='LOAD_CONST', opcode=100, arg=3, argval=6, argrepr='6', offset=109, starts_line=None, is_jump_target=False),
+ Instruction(opname='COMPARE_OP', opcode=107, arg=4, argval='>', argrepr='>', offset=112, starts_line=None, is_jump_target=False),
+ Instruction(opname='POP_JUMP_IF_FALSE', opcode=114, arg=124, argval=124, argrepr='', offset=115, starts_line=None, is_jump_target=False),
+ Instruction(opname='JUMP_ABSOLUTE', opcode=113, arg=80, argval=80, argrepr='', offset=118, starts_line=15, is_jump_target=False),
+ Instruction(opname='JUMP_FORWARD', opcode=110, arg=0, argval=124, argrepr='to 124', offset=121, starts_line=None, is_jump_target=False),
+ Instruction(opname='LOAD_FAST', opcode=124, arg=0, argval='i', argrepr='i', offset=124, starts_line=16, is_jump_target=True),
+ Instruction(opname='LOAD_CONST', opcode=100, arg=2, argval=4, argrepr='4', offset=127, starts_line=None, is_jump_target=False),
+ Instruction(opname='COMPARE_OP', opcode=107, arg=0, argval='<', argrepr='<', offset=130, starts_line=None, is_jump_target=False),
+ Instruction(opname='POP_JUMP_IF_FALSE', opcode=114, arg=80, argval=80, argrepr='', offset=133, starts_line=None, is_jump_target=False),
+ Instruction(opname='BREAK_LOOP', opcode=80, arg=None, argval=None, argrepr='', offset=136, starts_line=17, is_jump_target=False),
+ Instruction(opname='JUMP_ABSOLUTE', opcode=113, arg=80, argval=80, argrepr='', offset=137, starts_line=None, is_jump_target=False),
+ Instruction(opname='JUMP_ABSOLUTE', opcode=113, arg=80, argval=80, argrepr='', offset=140, starts_line=None, is_jump_target=False),
+ Instruction(opname='POP_BLOCK', opcode=87, arg=None, argval=None, argrepr='', offset=143, starts_line=None, is_jump_target=True),
+ Instruction(opname='LOAD_GLOBAL', opcode=116, arg=1, argval='print', argrepr='print', offset=144, starts_line=19, is_jump_target=False),
+ Instruction(opname='LOAD_CONST', opcode=100, arg=6, argval='Who let lolcatz into this test suite?', argrepr="'Who let lolcatz into this test suite?'", offset=147, starts_line=None, is_jump_target=False),
+ Instruction(opname='CALL_FUNCTION', opcode=131, arg=1, argval=1, argrepr='1 positional, 0 keyword pair', offset=150, starts_line=None, is_jump_target=False),
+ Instruction(opname='POP_TOP', opcode=1, arg=None, argval=None, argrepr='', offset=153, starts_line=None, is_jump_target=False),
+ Instruction(opname='SETUP_FINALLY', opcode=122, arg=72, argval=229, argrepr='to 229', offset=154, starts_line=20, is_jump_target=True),
+ Instruction(opname='SETUP_EXCEPT', opcode=121, arg=12, argval=172, argrepr='to 172', offset=157, starts_line=None, is_jump_target=False),
+ Instruction(opname='LOAD_CONST', opcode=100, arg=5, argval=1, argrepr='1', offset=160, starts_line=21, is_jump_target=False),
+ Instruction(opname='LOAD_CONST', opcode=100, arg=7, argval=0, argrepr='0', offset=163, starts_line=None, is_jump_target=False),
+ Instruction(opname='BINARY_TRUE_DIVIDE', opcode=27, arg=None, argval=None, argrepr='', offset=166, starts_line=None, is_jump_target=False),
+ Instruction(opname='POP_TOP', opcode=1, arg=None, argval=None, argrepr='', offset=167, starts_line=None, is_jump_target=False),
+ Instruction(opname='POP_BLOCK', opcode=87, arg=None, argval=None, argrepr='', offset=168, starts_line=None, is_jump_target=False),
+ Instruction(opname='JUMP_FORWARD', opcode=110, arg=28, argval=200, argrepr='to 200', offset=169, starts_line=None, is_jump_target=False),
+ Instruction(opname='DUP_TOP', opcode=4, arg=None, argval=None, argrepr='', offset=172, starts_line=22, is_jump_target=True),
+ Instruction(opname='LOAD_GLOBAL', opcode=116, arg=2, argval='ZeroDivisionError', argrepr='ZeroDivisionError', offset=173, starts_line=None, is_jump_target=False),
+ Instruction(opname='COMPARE_OP', opcode=107, arg=10, argval='exception match', argrepr='exception match', offset=176, starts_line=None, is_jump_target=False),
+ Instruction(opname='POP_JUMP_IF_FALSE', opcode=114, arg=199, argval=199, argrepr='', offset=179, starts_line=None, is_jump_target=False),
+ Instruction(opname='POP_TOP', opcode=1, arg=None, argval=None, argrepr='', offset=182, starts_line=None, is_jump_target=False),
+ Instruction(opname='POP_TOP', opcode=1, arg=None, argval=None, argrepr='', offset=183, starts_line=None, is_jump_target=False),
+ Instruction(opname='POP_TOP', opcode=1, arg=None, argval=None, argrepr='', offset=184, starts_line=None, is_jump_target=False),
+ Instruction(opname='LOAD_GLOBAL', opcode=116, arg=1, argval='print', argrepr='print', offset=185, starts_line=23, is_jump_target=False),
+ Instruction(opname='LOAD_CONST', opcode=100, arg=8, argval='Here we go, here we go, here we go...', argrepr="'Here we go, here we go, here we go...'", offset=188, starts_line=None, is_jump_target=False),
+ Instruction(opname='CALL_FUNCTION', opcode=131, arg=1, argval=1, argrepr='1 positional, 0 keyword pair', offset=191, starts_line=None, is_jump_target=False),
+ Instruction(opname='POP_TOP', opcode=1, arg=None, argval=None, argrepr='', offset=194, starts_line=None, is_jump_target=False),
+ Instruction(opname='POP_EXCEPT', opcode=89, arg=None, argval=None, argrepr='', offset=195, starts_line=None, is_jump_target=False),
+ Instruction(opname='JUMP_FORWARD', opcode=110, arg=26, argval=225, argrepr='to 225', offset=196, starts_line=None, is_jump_target=False),
+ Instruction(opname='END_FINALLY', opcode=88, arg=None, argval=None, argrepr='', offset=199, starts_line=None, is_jump_target=True),
+ Instruction(opname='LOAD_FAST', opcode=124, arg=0, argval='i', argrepr='i', offset=200, starts_line=25, is_jump_target=True),
+ Instruction(opname='SETUP_WITH', opcode=143, arg=17, argval=223, argrepr='to 223', offset=203, starts_line=None, is_jump_target=False),
+ Instruction(opname='STORE_FAST', opcode=125, arg=1, argval='dodgy', argrepr='dodgy', offset=206, starts_line=None, is_jump_target=False),
+ Instruction(opname='LOAD_GLOBAL', opcode=116, arg=1, argval='print', argrepr='print', offset=209, starts_line=26, is_jump_target=False),
+ Instruction(opname='LOAD_CONST', opcode=100, arg=9, argval='Never reach this', argrepr="'Never reach this'", offset=212, starts_line=None, is_jump_target=False),
+ Instruction(opname='CALL_FUNCTION', opcode=131, arg=1, argval=1, argrepr='1 positional, 0 keyword pair', offset=215, starts_line=None, is_jump_target=False),
+ Instruction(opname='POP_TOP', opcode=1, arg=None, argval=None, argrepr='', offset=218, starts_line=None, is_jump_target=False),
+ Instruction(opname='POP_BLOCK', opcode=87, arg=None, argval=None, argrepr='', offset=219, starts_line=None, is_jump_target=False),
+ Instruction(opname='LOAD_CONST', opcode=100, arg=0, argval=None, argrepr='None', offset=220, starts_line=None, is_jump_target=False),
+ Instruction(opname='WITH_CLEANUP', opcode=81, arg=None, argval=None, argrepr='', offset=223, starts_line=None, is_jump_target=True),
+ Instruction(opname='END_FINALLY', opcode=88, arg=None, argval=None, argrepr='', offset=224, starts_line=None, is_jump_target=False),
+ Instruction(opname='POP_BLOCK', opcode=87, arg=None, argval=None, argrepr='', offset=225, starts_line=None, is_jump_target=True),
+ Instruction(opname='LOAD_CONST', opcode=100, arg=0, argval=None, argrepr='None', offset=226, starts_line=None, is_jump_target=False),
+ Instruction(opname='LOAD_GLOBAL', opcode=116, arg=1, argval='print', argrepr='print', offset=229, starts_line=28, is_jump_target=True),
+ Instruction(opname='LOAD_CONST', opcode=100, arg=10, argval="OK, now we're done", argrepr='"OK, now we\'re done"', offset=232, starts_line=None, is_jump_target=False),
+ Instruction(opname='CALL_FUNCTION', opcode=131, arg=1, argval=1, argrepr='1 positional, 0 keyword pair', offset=235, starts_line=None, is_jump_target=False),
+ Instruction(opname='POP_TOP', opcode=1, arg=None, argval=None, argrepr='', offset=238, starts_line=None, is_jump_target=False),
+ Instruction(opname='END_FINALLY', opcode=88, arg=None, argval=None, argrepr='', offset=239, starts_line=None, is_jump_target=False),
+ Instruction(opname='LOAD_CONST', opcode=100, arg=0, argval=None, argrepr='None', offset=240, starts_line=None, is_jump_target=False),
+ Instruction(opname='RETURN_VALUE', opcode=83, arg=None, argval=None, argrepr='', offset=243, starts_line=None, is_jump_target=False),
+]
+
+# One last piece of inspect fodder to check the default line number handling
+def simple(): pass
+expected_opinfo_simple = [
+ Instruction(opname='LOAD_CONST', opcode=100, arg=0, argval=None, argrepr='None', offset=0, starts_line=simple.__code__.co_firstlineno, is_jump_target=False),
+ Instruction(opname='RETURN_VALUE', opcode=83, arg=None, argval=None, argrepr='', offset=3, starts_line=None, is_jump_target=False)
+]
+
+
+class InstructionTests(BytecodeTestCase):
+
+ def test_default_first_line(self):
+ actual = dis.get_instructions(simple)
+ self.assertEqual(list(actual), expected_opinfo_simple)
+
+ def test_first_line_set_to_None(self):
+ actual = dis.get_instructions(simple, first_line=None)
+ self.assertEqual(list(actual), expected_opinfo_simple)
+
+ def test_outer(self):
+ actual = dis.get_instructions(outer, first_line=expected_outer_line)
+ self.assertEqual(list(actual), expected_opinfo_outer)
+
+ def test_nested(self):
+ with captured_stdout():
+ f = outer()
+ actual = dis.get_instructions(f, first_line=expected_f_line)
+ self.assertEqual(list(actual), expected_opinfo_f)
+
+ def test_doubly_nested(self):
+ with captured_stdout():
+ inner = outer()()
+ actual = dis.get_instructions(inner, first_line=expected_inner_line)
+ self.assertEqual(list(actual), expected_opinfo_inner)
+
+ def test_jumpy(self):
+ actual = dis.get_instructions(jumpy, first_line=expected_jumpy_line)
+ self.assertEqual(list(actual), expected_opinfo_jumpy)
+
+# get_instructions has its own tests above, so can rely on it to validate
+# the object oriented API
+class BytecodeTests(unittest.TestCase):
+ def test_instantiation(self):
+ # Test with function, method, code string and code object
+ for obj in [_f, _C(1).__init__, "a=1", _f.__code__]:
+ with self.subTest(obj=obj):
+ b = dis.Bytecode(obj)
+ self.assertIsInstance(b.codeobj, types.CodeType)
+
+ self.assertRaises(TypeError, dis.Bytecode, object())
+
+ def test_iteration(self):
+ for obj in [_f, _C(1).__init__, "a=1", _f.__code__]:
+ with self.subTest(obj=obj):
+ via_object = list(dis.Bytecode(obj))
+ via_generator = list(dis.get_instructions(obj))
+ self.assertEqual(via_object, via_generator)
+
+ def test_explicit_first_line(self):
+ actual = dis.Bytecode(outer, first_line=expected_outer_line)
+ self.assertEqual(list(actual), expected_opinfo_outer)
+
+ def test_source_line_in_disassembly(self):
+ # Use the line in the source code
+ actual = dis.Bytecode(simple).dis()[:3]
+ expected = "{:>3}".format(simple.__code__.co_firstlineno)
+ self.assertEqual(actual, expected)
+ # Use an explicit first line number
+ actual = dis.Bytecode(simple, first_line=350).dis()[:3]
+ self.assertEqual(actual, "350")
+
+ def test_info(self):
+ self.maxDiff = 1000
+ for x, expected in CodeInfoTests.test_pairs:
+ b = dis.Bytecode(x)
+ self.assertRegex(b.info(), expected)
+
+ def test_disassembled(self):
+ actual = dis.Bytecode(_f).dis()
+ self.assertEqual(actual, dis_f)
+
+ def test_from_traceback(self):
+ tb = get_tb()
+ b = dis.Bytecode.from_traceback(tb)
+ while tb.tb_next: tb = tb.tb_next
+
+ self.assertEqual(b.current_offset, tb.tb_lasti)
+
+ def test_from_traceback_dis(self):
+ tb = get_tb()
+ b = dis.Bytecode.from_traceback(tb)
+ self.assertEqual(b.dis(), dis_traceback)
+
if __name__ == "__main__":
- test_main()
+ unittest.main()
projects / python / commitdiff